TY - JOUR
T1 - Prediction of softening behavior of simulant sinter ore by ADEM-SPH model
AU - Ishihara, Shingo
AU - Ohno, Ko Ichiro
AU - Konishi, Hirokazu
AU - Watanabe, Takashi
AU - Natsui, Shungo
AU - Nogami, Hiroshi
AU - Kano, Junya
N1 - Funding Information:
This work was supported by the JSPS KAKENHI Grant number 19K15331, 15H04168 and the research group of Control of Cohesive Phenomena in Blast Furnace to optimize Gas Permeability established in Iron and Steel Institute of Japan.
Publisher Copyright:
© 2020 Iron and Steel Institute of Japan. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Softening and melting phenomena of burdens in the cohesive zone in the blast furnace are factors that cause the deterioration of gas permeability. Numerical examinations to predict the softening behavior of burdens in the packed bed were performed in this study. In order to represent the softening characteristics of the simulant sinter ore, the simulation of a single pellet load softening test was carried out. The strength properties of the pellets were evaluated by the shrinkage degree in the load softening test. Shrinkage degree of pellets with different basicity and pre-reduction ratio were attempted to reproduce. To represent the softening behavior of the pellet, ADEM (Advanced Distinct Element Method) SPH (Smoothed Particle Hydrodynamics) coupling model was applied. Softening and shrinkage could be represented by decreasing the joint spring coefficient while the pellet was loaded. The relationship between the joint spring coefficient and the temperature was determined to compare the shrinkage degree obtained in the experiment and the simulation. The determined joint spring coefficient was used to predict the softening behavior in the load softening test of a packed bed. The simulation results of the shrinkage degree curve showed good agreement with the experimental results. It was indicated that the softening behavior in the cohesive zone could be predicted by this calculation method.
AB - Softening and melting phenomena of burdens in the cohesive zone in the blast furnace are factors that cause the deterioration of gas permeability. Numerical examinations to predict the softening behavior of burdens in the packed bed were performed in this study. In order to represent the softening characteristics of the simulant sinter ore, the simulation of a single pellet load softening test was carried out. The strength properties of the pellets were evaluated by the shrinkage degree in the load softening test. Shrinkage degree of pellets with different basicity and pre-reduction ratio were attempted to reproduce. To represent the softening behavior of the pellet, ADEM (Advanced Distinct Element Method) SPH (Smoothed Particle Hydrodynamics) coupling model was applied. Softening and shrinkage could be represented by decreasing the joint spring coefficient while the pellet was loaded. The relationship between the joint spring coefficient and the temperature was determined to compare the shrinkage degree obtained in the experiment and the simulation. The determined joint spring coefficient was used to predict the softening behavior in the load softening test of a packed bed. The simulation results of the shrinkage degree curve showed good agreement with the experimental results. It was indicated that the softening behavior in the cohesive zone could be predicted by this calculation method.
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U2 - 10.2355/ISIJINTERNATIONAL.ISIJINT-2020-078
DO - 10.2355/ISIJINTERNATIONAL.ISIJINT-2020-078
M3 - Article
AN - SCOPUS:85090217513
SN - 0915-1559
VL - 60
SP - 1545
EP - 1550
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
IS - 7
ER -